CHICAGO – The Rev. Jesse Jackson called on President Barack Obama on Saturday to return to Chicago and approve federal intervention to help stem the number of deadly shootings in the nation's third-largest city, saying "we can't handle it alone."

"No city in America right now faces Chicago's crisis," Jackson said. "We need help."

The civil rights leader spoke just before leading a march to the park where a 15-year-old honor student was shot and killed Tuesday in a wealthy neighborhood on Chicago's South Side. Police say Hadiya Pendleton was talking with friends after school when she was caught up in a gang shooting.